Round-6 follow-up commits that the background tasks made after
the initial v5.7 commit:
relibc 92f9d629 — POSIX sem_open implementation + ioctl soundness:
- sem_open now uses O_CREAT from fcntl.h and mode_t from platform
types. cbindgen.toml now includes <bits/valist.h> for va_list and
defines SEM_FAILED as ((sem_t *)0). This UNBLOCKS the sem_open
panic; packages like Apache Portable Runtime that need named
semaphores can now link and work.
- ioctl helpers: two unsoundness issues fixed (cast patterns
corrected; padding-byte reads via &[u8] reference eliminated).
relibc ef52efde — last 2 active unimplemented!():
- getnetbyaddr: walks /etc/networks (via setnetent/getnetent)
and returns the matching entry. Validates the address family
before lookup.
- gethostbyname: similar /etc/hosts walk.
ipcd c33f6ce7 — SHM access-mode enforcement + zero-fill on grow:
- O_RDONLY/O_WRONLY/O_RDWR handling (was line 51 FIXME): the
Handle enum now tracks access mode and shmat with mismatched
intent returns EACCES. Genuine correctness improvement.
- Zero-fill on grow (was line 232 FIXME): bytes from old_len to
new_len are now zero-filled in shm.truncate.
- Read-as-zeros for untouched ranges (was line 293 FIXME):
reads past the initialized length but within mapped size return
zeros per POSIX.
All these are real implementations replacing real FIXMEs.
No panics, no stubs, no 'TODO' left in these paths.
Per local/AGENTS.md NO-STUB POLICY: every FIXME has been replaced
with a real, POSIX-compliant implementation.
kellito
462ee7e9b4